4.1. Identify the Status Lights on a Cisco Device When Given Instruction by an Engineer. 100-150 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   You are instructed to verify that a Cisco switch port is connected but not passing traffic. The port LED is solid amber. What does this indicate?

   • AThe link is up but the port is blocked or in a degraded state.
   • BThe link is down and no cable is connected.
   • CThe port is in a fault state and needs replacement.
   • DThe port is operating at full duplex and speed.
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2. 22application · medium

   You are troubleshooting a Cisco switch port that is connected to a server. The link LED is off, but the server's NIC LED is on. What does the off LED on the switch port most likely indicate?

   • AThe switch port is in a spanning-tree blocking state, which is why the LED is off.
   • BThe switch port has no link, which could be due to a faulty cable, a disabled port, or a speed/duplex mismatch.
   • CThe switch port is up but the LED is broken and needs replacement.
   • DThe switch port is receiving traffic but the LED is off because the port is in a low-power mode.
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   An engineer asks a technician to verify whether a Cisco switch port is actively passing data. The technician observes the port LED blinking green. What should the technician conclude?

   • AThe port is experiencing a duplex mismatch and the LED is alerting to errors.
   • BThe port is disabled and the LED is reflecting ambient light.
   • CThe port is in a spanning-tree blocking state and the LED is signaling the transition.
   • DThe port has an active link and is currently transmitting or receiving data.
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5. 24expert · medium

   You are troubleshooting a Cisco switch port that is connected to a VoIP phone. The phone has a PC connected to its pass-through port. The switch port LED is solid green, but the PC cannot access the network. What is the most likely cause?

   • AThe PC's cable is faulty, even though the phone's link is up.
   • BThe switch port is in a spanning-tree blocking state for the PC's traffic.
   • CThe phone is not forwarding traffic to the PC because the phone is off.
   • DThe PC is in a different VLAN than the phone, and the switch port is not configured for the PC's VLAN.
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6. 25application · medium

   A technician is troubleshooting a slow connection for a user. The engineer asks, 'Is the switch port showing any errors?' The technician sees the port LED is amber. What should the technician report?

   • AThe port is disabled and needs to be re-enabled.
   • BThe port is experiencing an error condition that may affect performance.
   • CThe port is in a high-traffic state and the amber color indicates heavy usage.
   • DThe port is operating normally and the amber color is just a cosmetic variation.
   Reveal Solution Discussion Select an answer first